Quote:
Originally Posted by Tornadosailing
When putting the two in parallel you should see half the current across each breaker. In theory anyway. Real life will probably have some variation...
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There's a reason the NEC says this may only be done if the unit is factory-made*.
Designing such a configuration, so that both breakers get equal current,
means making their resistance exactly equal, which is not trivial.
Remember why we have a Code in the first place: because otherwise we risk getting punished by laws of physics instead!
*
National Elecrical Code, article 240.8: Fuses or Circuit Breakers in Parallel.
Fuses and circuit breakers shall be permitted to be connected in parallel where they are factory assembled in parallel and listed as a unit. Individual
fuses, circuit breakers, or combinations thereof shall not otherwise be connected in parallel.